Double action hull extractor



Sept. 15, 1931.- A. L. SMITH DOUBLE ACTION HULL BXTRAGTbE Filed Au 10. 1929- 'AL mM/z By 1 A llorneys v (III 3 Patented Sept, is, 1931 COMPANY I DOUBLE ACTION HULL nx'rnaoron Applicat ion filed August 10, 1929. Serial No. 384,908.

invention "relates to cotton hull extractors and the like in which the seed cotton mixed vwith hulls, trash; and foreign matter e is received and acted fuponby' successive 5 cleaning and hull extract ng mechanisms.

" Myinve'ntion is distinguished by the adap- I .tation of the same hull extracting mecha; nismsto act twice onboth the hulls and the seed cotton, whereb'y al freer discharge of the'hull'spast the 'first orfinitial mechanism ispermissible without undue loss'of cotton resulting when the hulls after the successive treatments are 'finally'f discharged.

More particularly, my invention contemplatesi utiliz ing a plurality of hull extracting agenciespre'ferably 'two saw assemblies, and causingbothfthe seedcottonand' the N-hullaseparated by: the initial, saw assembly,

to'move, by} separate pathsito'f the other'saw fassemblywhich is adapted togive such hulls asecond cleaning beforethey are discharged.

I My linv'enti'on also contemplates conduct- 1 ing the hulls intheir passag rrom' the first to the. second saw assembly, over a screen or grid hullboard which will permitthe hull particles entirely free of cotton and the dirt and small trash toescaperlirectly andwithoutretreatment by the second saw assembly; 'As illustrative ofv ;a' suitable embodiment of my invention, attention is called to the accompanying drawings which show my improved type of hull transverse cross section;

extractor in vertical J Y The material} to be treated, such as seed cotton, enters the machine through the inlet lyand is actedxupon by feed rollers 2 which deliver it into the roll chamber 3 where it is directed by the inclined hull board 'toward baclrthe hulls a'dheringjto the cotton that is carried over by the'sawteeth, The dofiing PATENT OFFICE Ane'n'nironnsm'rrn, :OF'BIRMINGHAM, ALABAMA, AssIGnoR TO CONTINENTALYGIN brush 9 removes the seed cotton from saw 5 andit passes down between the inclined casmg wall l and a guard 11 extending from sine to'side ofvthe'machine and curved to conform closely to-the curvature of the juxtapo'sed saw cylinder 5. The lower end of theguard 11 is bent away from the saw to form the hull board 12 which is located above a hull board 13 formed preferably by a screen or'grid which is inclined downwardly from the casing wall 14 and serves to direct hulls, escapmgbetween the hull board 4 and roller 6 and between the hull board 12 and saw cylinder 15, into contact with the saw 15 of the second saw assembly. j 7

The saw 15 is disposed to receive the seed cotton passing down between the elements 10 and 11 and over hull board 12 and to again cleanit, carrying the seed cotton past the stripper roller 16' to the doifing brush'17 which discharges the cleaned I seed cotton into the outlet 18 leading to the gin. y

The hull board 12 projects close enough to the saw to prevent the seed cotton falling onto thelower hull board 13 but the latter will direct any escaping 'uncleaned hulls again into engagement with the saw 15.

Ahull feed roller 19, corresponding to roller 6,"co-acts with saw 15 andpermit-s the cleaned hulls, not small enough to fall through the screen 18, to escapebetween said hull screen 13 and the roller 19. The hulls pass off through the outlet 20, l

The saw 5 or an equivalent device and 'coacting elements 4,6, 8 and Q-form the first or initial saw assembly, and the saw 15 and its coacting elements 12, 13,16, 17 and 19 form the second saw assembly. The hull board 12 permits any trash orphulls knocked back by the stripper roller 16 to passdown onto the lowerscreen hull board 13 and either fall therethrou'gh or pass down to and escape between the screen hull board and roller'19.

It being understood that all I elements marked with arrows rotate in the directions indicated by means of any suitable drive, (not shown), the firsts'awassembly will act in the manner well understood to" deliver the seed cotton 'to'the second saw assembly for retreatment before discharge into outlet'18.

But, instead of discharging all the hulls Y 15'and'dofiedbylbrush 17. Tliis-allows-meto thrown by the first saw assembly, any of the latter that are too large to fall through. screen 13 or that carry locks of cotton, will slide down the screen hull board 13' and along with the hulls escaping from the treat ment chamber 21: throughv the opening left between'the saw and its hull board 12, will 7 be brought into contact with the saw 15 belowiits' hull. boa-rd. 12 i It follows that any cotton was hulls will be stripped therefrom bythe saw provide ample clearance for the hulls to escape freely from the treatment chambers 3 and 21,. respectively, of the two saw assemblies, and yetwill prevent such hulls finally escaping until effectively cleaned asthe second treatmentof thehulls escaping: from the clianibersl3and 21 will be. just enough to strip them ofadhering cotton. With a minimum or mechanism I thus obtain double treatment a of both hulls and seed cotton. Y

6 Though I have described with great J n tic'ula'rity the details r ot the embodiment of, I the invention herein shown, it s not tobe con strued that} am limited thereto, as. changes n arrangement and. substitution of equivalentsfrnay be nia-deby those skilled in the art without "departing from the invention as de fined in'the appended'cl'aims," v o I whatl'claimisz i' i 1 1. IA hull extractor for seed cotton and'the like, comprising two hull extracting assem- "bliesf,,means. to direct'fthe seed cotton in a 2: A'hull' semester seedcotto the like, comprisingftwo' saw, assemblies having hull extracting agencies, means 'tO,,direct the eaaedtn; blifes; o

seed cottoni'nto successive engagement with the hullfextractlngagencies of said assemihlfiesjandj means to direct, in a path separate from the seed cotton, hulls the l ke dlsrchargedfro rn both-assemblies intoposition to 5 yIthe sawlof one of said assem- 3; T s. hull extractor iorseed cotton and, the; h e a pair ofsa'w assembl es CQHIPIlSlIlg hull extracting agenc1es,-meansto cause the seed o cotton to be successivel-yf acted 1 upon by the hull extracting agencies of said: saw as- V continuously ejectedby the one saw assembly i and: directwt'hern intopositionlto be strippedv aw assembly.

smb1ies, and a uide adapted to catch t is of any Cotton adheringthereto by theother j 1 gilrln a hullextractor tor seed cotton the Iike,'a' pair ofhull extracting saw assemblies',;nieansto1 cause theseed cotton toibei SEC? es iv' ly. acted p n y th hull rati s 'ment.

elements of said saw assemblies, anda screening hull board adapted to catch hulls ejected o 1 by the first saw assembly and direct them into position to be strippedof any cotton adhering thereto by the second saw assembly.

5. In a hull extractor for seed cotton and the like, feeder rollers for the seed cottonand hulls, a saw cylinder and a hull board coacting therewith, a stripper and a dofi'er means 1 coacting with the saw 7 cylinder-o whichis retated to pass its teeth upwardly through the seed cotton, a second saw cylinder driven like the fi rst and having a hull board to'direct into engagement therewith seed cotton and'hulls defied from the firstmentioned saw'cylinder, Y

stripping and dotting, means coacting with the cotton and hulls carried by the second saw cylinder, and a supplemental hull board disposed to catch'thehulls and trash discharged between said saws and their said respective hull boards'and directsame into contact with the'said-secondsaw cylinder for aifin'al treata n1- 5 imu exam for an t ach and the like, feeder-rollers for the seed cotton and hulls, a sawi'cyl'inder and {ahull board and huller roller coacting therewith,a stripper and a dofi'er means coa'cting with the saw cylinder which isrotated' to pass its teeth upwardly through the seed cotton, a second saw cylinder driven likethefirstan'd having a hull board to"direc tinto engagement therewith seed cotton and hulls dosednem th first mentioned saw cylinder, stripping anddofh ing means c'oacting'with thecottonand hulls that are directed into engagement with the second saw cylinder, and a supplemental hull board meansdisposed to catch the hulls escaping past said hull boards'foi bothsaw cylinders and direct same into contact with the second saw cylinder for finaltreatrnent before theirdischa'rgei; v I -V 1 )7, In a machine for separating hulls and trash from cotton and the like,the*coinbination of'two hullremovingagencies arranged and adapted to act successively on themain cotton stream in its traverse of the machine,

each a enc corn arisin means men a e the cotton to separate it from. thehulls andl to dischargethe cotton and hulls separately, means to cause the hulls discharged by each of said agencies together with such cotton as i tends to escape with the hulls, to move in separate streams along converging paths,

and a'rotatable element disposed to act on the cotton in both hull streamsto restore itito "the cotton engaging means of one 7 of: said agencies, r

' 8. In amachinefor'separating hulls {and trash from cotton andthe like, the combination ofaprimaryand a's'econdary saw cylinder adaptedito" act successi-vely on; the main cotton stream, means to feed mixed cotton" and hulls to. theprimar'y' saw'cylinder, means to w hadis hate @fhtll f f m th i e n' stream past each of said saw cylinders, means to cause the two hull streams to pass on opposite sides of one of said saw cylinders, and means'disposed toact on bothof'said hull streams to restore cotton passed to waste therewith to one'of said saw cylinders t be returned thereby to the cotton stream.

" 9. In a machine for-separating hulls and trash from' cotton and the like, thecombina- .tion of a main saw cylinder and a secondary saw cylinder, means to feed mixed cotton and hulls to the main saw cylinder, means to deliver the main cotton stream from said first mentioned saw cylinder to said secondary saw cylinder, means to cause the discharge of hulls past each saw cylinder in separate streams, one hull stream passing under one ofthe saw cylinders toward theother hull stream, and

means disposed to act on both hull streamsto restore cotton passing into waste therewith to one of said saw cylinders.

10.'In a machine for separating hulls and trash from cotton and the like, a cotton se arating agency comprising an initial saw cy 'indler, a stripper, a dolfer and means to permit the escape of hulls and trash with some cotton stream, a second cotton separating agency which receives 'the cotton stream dotfedfrom said initial saw cylinder and comprising a saw cylinder, a stripper and a dofarately from the main cotton stream, and coacting elements interposed in the path of the hulls discharged in both hull streams to eftracting assemblies through which the main cotton stream passes and by which the cotton therein is twice treated for the'separation therefrom of hulls and trash, and means to causethe returntosaid cotton stream of cotton that would otherwise go to waste with the hull streams from both of said assemblies.

In testimony whereof I aflix my signature. ALGERNON L. SMITH.

entrained cotton separately from the main fer which act on said cotton streams, and means to permit the escape of hulls and'trash with some entrained cotton, a rotating ele- 'ment interposed in the path of the cotton hulls and trash rejected by both of said separating agencies and acting'to cause the cotton in the vcmachine, two units for separating the cotton 7 several hull streams said saw cylinders; 1 .7

1 1. Ina cotton separating. and cleaning from the hulls and trash, each unit compris- V ing a saw cylinder having hull rejecting and cotton removing agenc es associated thereton stream removed from the saw cylinder I with, the saw cylinder of the second. unit being' disposed andadapted to receive the cotof the first unit, therebeing provided for each unit a separate discharge for hulls andtrash with some cotton mixed therewith past its respective saw cylinder, and'means common to the discharge of both units for separating the return cotton from both discharges of hulls to the same saw cylinder. I

12. A hull extractor for seed cotton and the like, comprising a main extracting saw associated with means which will remove from the main cotton stream and discharge separately therefrom a stream of hulls compris- C3 ing some cotton tending to go to waste therewith,a second extracting saw and associated means which receive and act upon themain "cotton stream discharged from the mainextracting saw to separate therefrom a stream to be returned to one of of hulls and trash and dischargesame sep- 

